they're allowed to stop them. if they have reasonable suspicion that the person is armed, they can pat them down externally. they can't put their hands into a suspect's pockets, for example. and, but what bratton did, and for that practice -- those are allowed, and civil rights attorneys will say that happens, that's allowed all over the country. what bratton did in new york was a much more aggressive form of that. there was -- in heavy crime areas, drug market, open-air drug market areas. you had a very intensive use of stop and frisk. and it had -- there was a -- now, those drug market areas in new york were heavily impacted. now, whether they could have been impacted without stop and frisk is an open question. sociologists say. so, but bratton and other police advocates would say it was instrumental, but, again, that's an open question whether it was, how necessary that was.